I love this bunk bed! I am 66yrs old and my husband is 70 so we assembled it a little at a time over the course of a week. Younger people could finish it much quicker! Instructions have NO WORDS so you really have to examine each photo carefully and check every little notch and hole to make sure the pieces are facing the right way before you start screwing each piece together.  We did have to take one piece apart when, several steps later we realized we had gone wrong. But the directions were really not bad. As for quality the bed is SOLID and STURDY. We had a metal bunk bed before and it was creaky every time someone moved! Also the ladder on this is at an angle making it much easier to climb. Our last one was straight up and down. We did not attach the ladder so that I can remove it to keep little ones from climbing up on their own. I also like that the beds take a regular thickness standard twin mattress. also nice high sides. LOVE IT!!